A WOMAN'S PLAN. 'My dear Mary,' said I, one morning, to my widowed sister, as she sank into an arm chair in front of my library fire, and heaved a sigh replete with exhaustion and sadness: 'What is the matter?' 'Enough for a woman, William, but of course, nothing for an old bachelor like you, who have only to pay your own bills, eat your meals without the trouble of ordering them; lounge through a clean house with no chasing after servants to sweep and wash and dust; sit in your study, hea...